System and method for data input resistant to capture

A computer-implemented method of confidential data input resilient against data capture includes receiving input concurrently from first and second input devices. The input from the first input device corresponds to characters. An input mode indication is determined based on the input received at the second input device and indicates at least a first character of the plurality of characters being input in a first input mode and at least a second character of the plurality of characters being input in a second input mode. An input string is formed by extracting the at least a first character input in the first input mode. An action is initiated based on the input string. The first input device may be a keyboard. The second input device may be a sensor such as a portion of a touchscreen or a fingerprint sensor. Related systems and computer-readable media are also disclosed.